Means for detachably connecting an operating member to a power-driven shaft



Nov. 13,1923. 11,474,153

B. W. KLEIN MEANS FOR DETACHABLY CONNECTING AN OPERATING MEMBER TO A POWER DRIVEN SHAFT Filed Oct. 16, 1922 Patented Nov. id, 1923.

TBS

BENJAMIN W. KLEIN, OF MOUNT VERNON, NEW YORK.

MEANS non DETAOHABLY CONNECTING AN OPERATING MEMBER To A POWER-DRIVEN SHAFT.

Application filed October 16, 1922. Serial No. 594,965.

I '0 all In/mm. it may concern Be it known that I, BENJAMIN \V. KLEIN. a citizen of the United States, and resident of Mount Vernon, county of lVestchester, and State of New York, lnve invented certain new and useful Improvements in Means for Detachably Connecting an Operating Member to a Power-Driven Shaft, of which the following is a specificationv This invention relates to in'iproved means for detachably connecting an operating member to a. power driven shaft and more particularlyhas for its primary object and purpose to provide simple and effective means for detachably connecting a polishing brush or other applicator to, the end of a flexible shaft of a shoe polishing machine, such for instance as is illustrated in my prior application for patent filed March 3, 1922, erial No. 540.923. 4

In the accompanying drawing, I have illustrated an embodiment of the invention wherein the flexible shaft is provided with a rigid axial extension at one of its ends and means to coact with the tubular core or sleeve of a brush body so as to prevent rotation of the brush upon said shaft. Upon one end of the brush body there is arranged a manually operable element to coact with the end of the shaft extension and hold the brush against longitudinal shifting movement.

With the above and other objects in View the invention consists in the improved means for detachably mounting the brush or other operating tool upon the power shaft and in the form, construction and relative arrangement of the several parts as will be hereinafter more fully described, illustrated in the accompanying drawings and subsequently incorporated in the subjoined claims.

In the drawing wherein I have shown one practical construction of my invention and in which similar reference characters designate corresponding parts throughoutthe several views:

Figure 1 is a longitudinal section through the brush showing the same in its applied position upon the driving shaft. said section being taken on the line .1"l of Figure 2;

Figure 2 is an end elevation; 1 Figure 3 is a section taken on. the line 3-3 of Figure 1; and V Figure 4 is a detail fragmentary perspective view of the tubular core of the brush body.

In the drawing, I have shown only a small portion of the flexible shaft 5 the end of which is enclosed by the hand hold To this flexible. shaft there is connected inanv suitable manner, a rigid shaft extensioni which projects beyond the hand held 6 and is in coaxial relation therewith. Spaced pins 8 extend. diametrically through the shaft extension '7 adjacent to the end- 0f the hand hold and project slightly beyond the opposite sides of said shaft extension. The purpose of these. pins will become apparent from the. following. description.

In the drawing I have illustrated a brush 9 such may be employed for the purpose of polishing shoes. though it will be under-v stood that the presentinvention is adaptable for use in connection with other applicators or tool elements to be employed for other purposes. The brush is provided with a cylindrical body 10, preferably of .wood, in which the tufts of brush bristles are secured in any approved manner. This body 10 is provided with a central longitudinally extending tubular core or sleeve '11, said sleeve at one of its ends projecting beyond the end of the brush body and having longitudinally extending slots 12 in the opposite sides thereof.

Upon the other end of the brush body 10, a flanged metal cap 13 is secured, as by means of the screws l l. the flange of said cap being formed with an internal shoulder 15 abutting against the end of the brush body whereby the body wall of the cap maybe positioned in spaced parallel relation -to the end face of the body 10.

Upon the innei face of the body-wall of the cap 13 a curved l ver 16 is pivot-ally mounted at one of its ends upon the stud 0r pin 17 fixed in the cap wall. The end wall of the cap is centrally provided with anopening 18 through which the taperedfrustro-conical end or terminal 19 of the shaft extension 7 is adapted to project. At the inner side of this tapered end of the shaft extension said shaft isprovided with a continuou annular groove 20.

In the outer edgeof the curved lever 16 one end of a leaf spring 21 is fixed, the free end of said spring being curved as at 22 and bearing against the marginal flange of the cap 18. This spring, therefore,'normally acts to urge the pivoted lever '16 inwardly towards the shaft 7 whereby the inner curved edge 23 of said lever is engaged in the annular groove 20, thus locking the brush or other tool upon the shaft against axial shifting movement thereon. The projecting ends of the pinsS engaging in the slots 12 of the sleeve or core 11 cffectually prevent relative rotation of the brush upon said shaft.

The lever 16 at its other end is provided with a headed stud 2t movable in the slot 25 formed in the wall of the cap 13. By engaging the headed stud 24 with the finger. the lever 16 can beeasily shifted against 'the action oflthespi'ing 21 and disengaged from't'he groove 20 so that the brush can be longitudinally withdrawn from the shaft 7.

From the above description. it will be seen thattheholding or retaining means whereby the brush is detachably seclured upon the end of the shaft for rotation therewith is exceedingly. si1npl.e,' the operating parts being coinpletely housed and protected by the metal cap 13 so that they are not likely to be displaced or damaged by rough handling. In applying the brush upon the end of the shaft. the tapered peripheralffacc of the shaft end. 19 coacts with the inner edge of the lever 1.6 and automatically forces said lever in an out ward direction as the brush is moved inwardly on the shaft until the lever passes inwardly, beyond the tapered end 19 of the shaft when it is immediately returned to its normal position by the spring 21 and engaged in the groove 20. The brush or other tool may be rotated at very high speeds without oscillating or otherwise moving from its position in coaxial relation with the power driven shaft so that there will be a steady application of pressure by the bristles of the brush upon the shoe.

I have herein shown and described one embodiment of the invention which I. have found to be entirelysatisfactory inpractical use. Nevertheless it will be apparent that the device as herein disclosed is susceptible of embodiment in various other alternative structures and I accordingly reservethe privilege of adopting all such legitimate "changes the form, construc-v tion and relativeQarrangement of'the several parts as may befairly embodied Within the spirit and scope of the invention as claimed.

" I claim:

1, In combination with an ope atin shaft having-a tapering outer end, a tool adaptedv to, be detachably engaged onsaid shaft and haying afeentralj core'. said com" and the shaft, being provided with coacting means wh rcby the tool is held against relative rotation on the shaft. aflcap fitted to the other end of the tool body and additonal .a tool having a body and a central tubular core projecting beyond one end of the body,

,said projecting end of the core and said shaft having coacting means to prevent relative rotation of the tool on theshatt, and a manually manipulable lever mounted on the other end of the tool body, said shaft being provided with a circumferential groove to receive said lever whereby the tool is held against axial shifting movement on said shaft.

3. In combination with an operating shaft, a tool having-a hodyand a tubular core extending centrally thei-ethrough and projecting beyond one end of said body. said projecting end of the core having diametrically opposed slots, spaced pinsprojecting troin opposite sides of the shaft for engage meat in the respective f slots to prevent rotation ot th'e tool upon said shaft, a cap fixed to the other end of the toolbody, and a spring pressed lever mounted within said cap, saidv shaft having an annular groove to receive said lever whereby. the'tool body is held against axial shifting movement on the shaft.

4.. In combination with an operating shaft. a tool having a body and a. tubular core extending centrally therethrough andpro jecting beyond one end of said body, said projecting end of the core having diametri c'ally opposed slots spaced pins projecting from opposite sides of the shaft for engagement in the respective slots to prevent rotation of the tool upon said shaft, a cap secured upon. the other end of saidtool boa and having a central opening, the shaft terininating in a frustroronical head adapted to extendtbrough said openingand providedwith an annular groove at the inner side of said head, a curved leverpivotally mounted at one. of itsends within. said cap. a spring normally urging said lever in one direction and .yieldingly resisting movement of the lever upon engagementof the frustroconical head with the inner edge of. said lever and acting to returnthe lever to its normal position with its inner edge engaged in said annular groove whereby the tool is.

held against axial movement on the shaft, and means for manuallyoperating saidilever from the: exterior of. the cap v herebythe lever may be disengaged from said. 2 V and the tool-detached. the shaft.

In testimony thatwl claim the foregoing as my invention, I have signed mynaine hereunder. V

WEN W;

'IlltlllllflllY manipulable means arranged bellll) 

